Friction draft-rigging for railway-cars.



J. F. OOONNOR. PRIGTION DRAFT RIGGING PoR RAILWAY GARS.

AIILGATIONl FILED AUG. 4, 1909.

Patented Nov. 12, 1912.

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To all whom 'it concern: i I

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JOHN F. OONNOR,OF CHICAGO, ILLINOIS, ASSIGNOR, Y MESNE SSIGNMENTS, T0

WILLIAM H. MINER, F CHICAG, ILLINOIS.l

FRICTION IIVRAElT-RI'GGING FOR RAILWAY-CARS.

Specification of Letters Patent.

Patented Nov. l2, 1912.

Application lfiled August 4, 1909. Serial No. 511,081.

Be it known thatl, Jointl F. OCONNOR, a citizen of the United Stat-es, 'residing in Chicago, in the county of Cook and State of Illinois` have-invented anew and useful Improvement in Friction Draft-.Rigging for Railway-Cars, of which the following is a specification.

a friction draft rigging of a strong, simple,

efficient and durable construction which will have a high cushioning. capacityl and provide for an c xtended movement of the draw-bar o-ver the customary two and oneeighth inch movement heretofore generally employed, and .which will have a much greater than normal spring cushioning movementv and also much greater than normal ,cushioning capacity, and in which the friction cushioning capacity and consequent wear maybe kept as low as `admissible for emcient and proper operation, and which will at lthe same time admit of the use of ordinary standard draft rigging springs` always kept in stock at car shops, and having the customary two and one-eighth inch compressive movement, and commonly known as class G springs. To practically accomplish this object or result, and at the saine time keep the draft rigging within the necessary or standard length over all, l combine with the draw-bar, ldraft yoke, followers and stop members, a friction cushioning mechanism comprising a shortfric tion shell with friction shoes, wedge and anti-friction rollers within the shell, two standard o'rclass G springs (each capable of the standardtwo and one-eighth inch compression) placed end to end with a floating separator or disk between them, the rear spring bearing at its rear` end against the rear follower, and the front spring bearing at its front end against a springcapwhich is interposed between the same and thel rear end of the friction shoes, the two end-to-end springs being subjected. to a one inch initial compression by `means of a connecting rod extending between the rear follower and the wedge of .the friction i mechanism, the two springs thus permitting .a further compression and consequent movement of the'draw-bar of three and one-quar- I with the short friction shell by rolled steel channel bars, the flanges of which are bolted to horizontal webs or wings with which'the friction shell is' provided.

My invention also consists in the novel construction of parts and devices and in the novel combinations of parts and devices herein shown and described and more particularly specified in the claims..

In the accompanying drawing forming a part of this specification, Figure 1 is a side elevation, partly in longitudinal section, of a friction draft rigging embodying my invention. Fig. 2 is a plan view,ipartly in horizontal section. Fig. 3 is a cross section on line 3 3 of Fig. 1. Fig. 4 is a section o-n line 4 4 of Fig. 1. Fig. 5 is a detail frontend view of certain parts. Fig. 6 is a detail end view of the friction shell and contained parts. Fig. 7 is a detail end view of the spring cap, and Fig.` 8 is a plan view' of one of the friction shoes, and Fig. 9 is a plan view of the wedge.

ln the drawing, A represents the draft sills or members of the car frame to which the draft rigging is applied, the same being preferably rolled steel center sills, B the draw-bar, B1 the draft yoke, C the draft lugs or stop members secured to thevdraft sills, l) D1 front and rear followers, E El two standard or class G springs, each placed end to end with a floating separator erably capable of the customary two and .one-eighth inch compressive movement.

F is a short, longitudinally movable friction shell having an internal cylindric friction face )t and provided on each side with laterally or horizontally projecting integrah wings or webs f1 to which the iiangesV f2 of the rolled steel channel bars F1 are securely riveted, by whichchannels the friction shell F is securely connected to the rear follower U1., the rear follower having flanges d to which the channels Flare secured by bolts di and the rear ends of the channels F1 abutting directly against said follower D1. rlhe connecting channel bars F1 thus cause the friction shell F to vmove longitudinally with the rear follower D1. The segmental friction shoes Gr are preferably three in number. each having an ex.- ternal friction face g in sliding frictional 1 engagement with the internal friction face ter inches, the v reanfollower'bein'g connected l of the shell F, and each having an inclined or 'wedge face f/1 parallel to and cooperating with one of the inclined faces h of the wed ge H, which is preferably three faced or pyran'lidal. Anti-friction rollers IVv .1 are interposed between the inclined or wedge faces of the friction shoes G and Wedge H, the rollers corresponding in number to the friction shoes and bearing against'. the friction shoes centrally or at their longitudinal middle portion. The friction shoes (lr each have a friction scat or shoulder '(/t to keep the rollers in place, and the wedge H is provided with cooperating shoulders L.' and the shoes G also have shoulders g3 to keep the rollers in place lengthwise.

The segmental friction shoes Gr are preferably-each an oblique segment of a cylinder, the oblique segments thus extending at an angle instead of parallel to the axis of the cylinder to prevent unevenncss of wear of the friction shell at the .meeting edges of the segmental shoes under the longitudinally reciprocating movement of the shoes in the shell. As the anti-friction rollers H1 bear against the center or middle portion of the friction shoes Gr, the pressure or thrust of the draw-bar,transmitted through the wedge Il and rollers H1 to the friction shoes, comes centrally against the same, thus insuring vproper bearing of the shoes against the shell from end to end of the shoes. 'To cause the opposing thrust or pressure of the springs to also come centrally against'. the friction shoes G, said shoes are each provided with a central bearing shoulder (/4 on its inner face closely adjacent to the inclined or wedge face y1 thereof against which the central bearing roller H1 acts, and against `wvhich central bearing shoulder 'gt the thrust or pressure of the springs E E1 is transmitted by means of a spring cap or seat disk G1, which is interposed betweenthe rear end of the friction `shoes and the front end of the front spring. said cap or disk G1 being furnished with a. plurality of wide and relatively thin supporting arms or bearing fingers g5, one of which bears at its inner end against the shoulders g4 of each of the friction shoes G. Normally, the spring seat or cap G1 has no contact with or action against the 'friction shoes except through the supporting arms i g5 which engage at. their inner ends the central bearing shoulders y* of the friction shoes. The cap G1 may preferably have a bevel face g and the friction shoes G may also. have bevel faces .(77.

K is a connecting rod having a head K1 at one end and a threaded nut K2 at the other, which extends through the springs and bears at one end against the rear follower and at its other end against the wedge H, and

which serves to hold the end-toend springs y E E1 under an initial compression, preferably of about one inch, thus leaving the two a supplemental member g8 against which the spring directly bears.

M is a removable tie-plate or guide which supports the draft rigging and is secured to the draft sills by bolts m.

. s I claim 1. In a friotion draft rigging, the combination with a draw-bar, draft yoke and fol-lowers, of a friction shell provided with integral projecting wings, friction shoes within the shell. a spring, and channel bars connecting said shell with one of said followers, substantially as specified.

2. In a friction draft rigging, the combination with a draw-bar, draft yoke, stop members and followers, of a friction shell having aninternal cylindrical friction face and connected rigidlyto and movable with one of said followers, friction shoes within the shell 'and having external vcylindrical friction faces` and a spring cushioning device in line with the draw-bar and between the friction shoes and one of the followers. said spring cushioning device being adapted to permit an extended movement of the draw-bar and exert an extended cushioning action tihereagainst, said friction shell having means for attachment thereto of connecting `bars and connecting bars extending between said shell and one of the followers substantially as specified.

JOHN F. OCNNOR.

lYitnesses PEARL Animals, H. M. ltlUNoav. 

